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nitride treatment

 
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  #1  
Old 02-20-2011, 10:47 AM
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nitride treatment

Anyone have any experience with this treatment
comments good or bad.
Reccomnedations on who/where to have it done.
trying to get prepared to rebarrel my 7mm remington mag.
Thanks retiredcpo
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Old 02-20-2011, 12:28 PM
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Re: nitride treatment

Quote:
Originally Posted by retiredcpo View Post
Anyone have any experience with this treatment
comments good or bad.
Reccomnedations on who/where to have it done.
trying to get prepared to rebarrel my 7mm remington mag.
Thanks retiredcpo
I've done a lot of it in my lifetime, but honestly I would not do a gun barrel. Melonite would be the route for me.
gary
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Old 02-20-2011, 12:49 PM
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Re: nitride treatment

I'm interested in this process as well.

Gary, what's the difference between nitride and melonite?

Joel Kendrick (sp?) is the guy I talked to about it and plan to have do mine. Here's the article I read about it:
Melonite Surface Treatment for Barrels, Bolts, and Actions Daily Bulletin

-Bryan
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  #4  
Old 02-20-2011, 12:53 PM
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Re: nitride treatment

I am going to send out a barrel to a guy to have nitride coated. It will be in my 338 Sin chambering and I will test it side by side to a twin uncoated barrel.
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Old 02-20-2011, 02:44 PM
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Re: nitride treatment

Gary
What Bryan said! what is the differance?
Do you know who does this ect
Retiredcpo
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  #6  
Old 02-20-2011, 04:47 PM
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Join Date: Jan 2011
Location: Oklahoma
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Re: nitride treatment

In my present position as an Engineering Manager, I've spec'ed in nitriding on a number of different applications. There are several different nitriding processes, the three I'm most familiar with are: salt bath(or liquid) nitriding, gas nitriding, and ion(or plasma) nitriding. All three do the exact same thing, the diffuse nitrogen ions into the surface of the metal so that iron nitride (Fe3N or Fe4N) can form, either of which are extremely hard. Before doing nitriding it's important to understand the heat treat history of the metal being case hardened. The nitriding process temperture can be as high as 1100 1200 degrees F, if your metal's tempering temperature was lower than the nitiding process temperature, then the steel's mechnical properties will be reduced as a result of being exposed to the the higher nitriding temperature.

PS
Melonite is a salt bath nitriding process
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  #7  
Old 02-20-2011, 05:20 PM
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Re: nitride treatment

I've been talking about this in my 6.5-375 Ruger thread. I decided to go with a couple of Wildcat 375 Ruger builds in 30 cal and 6.5 after talking with my smith about the process. He seems impressed with it and is planning on doing one of his bore burnig rifles with it. This is the only reason I would consider doing a 6.5-375 Ruger.

I did some googling on it today and found a number of threads from other forums and this video with the guy Bryan mentioned. 5000 rounds and his F-class rifle is still shooting 1/4 MOA.

YouTube - Salt-Bath Nitriding for Rifle Barrels -- Joel Kendrick Interview

Based on this development, if it's as good as it looks like it is, I'll be choosing higher velocity chamberings for future rifles.

For a 7mm, I would go with the 375 Ruger or RUM for LR application.

For a 25 Cal, I'm thinking of a WSM

For a 6mm, I'm thinking of an -06 or WSM

There is supposed to be an increase in velocity which is another bonus. How much seems to be sketchy, but thread poster claimed 200 fps, 3250 to 3450 in his 19" 300 RUM barrel.

This is really great if it's real!
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